How long does it take to send coins? How many confirmations?
How to withdraw coins from wallet -
https://waveswallet.io/?1 or 2 minutes before confirmation, most of times less than 1.
Why does the withdraw option not work in this wallet?
You can use the withdrawal option for WBTC or WEUR. Try send or transfer for the others
(maybe update your wallet if you aren't on the last version ?)